42444045231 has 16 divisors (see below), whose sum is σ = 68481149184. Its totient is φ = 22827049344.

The previous prime is 42444045229. The next prime is 42444045247. The reversal of 42444045231 is 13254044424.

It is not a de Polignac number, because 42444045231 - 2¹ = 42444045229 is a prime.

It is a super-2 number, since 2×42444045231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42444045192 and 42444045201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42444045211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59445085 + ... + 59445798.

It is an arithmetic number, because the mean of its divisors is an integer number (4280071824).

Almost surely, 2^42444045231 is an apocalyptic number.

42444045231 is a deficient number, since it is larger than the sum of its proper divisors (26037103953).

42444045231 is a wasteful number, since it uses less digits than its factorization.

42444045231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118890910.

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 42444045231 its reverse (13254044424), we get a palindrome (55698089655).

The spelling of 42444045231 in words is "forty-two billion, four hundred forty-four million, forty-five thousand, two hundred thirty-one".